No appetite after a stomach bug

Gastroenteritis can temporarily irritate the stomach and bowel. Nausea, loose stools, abdominal cramps or fever may make food unattractive, and appetite may return gradually after the other symptoms ease. A lingering change in taste or tiredness can also reduce interest in meals. The illness itself does not identify its exact cause; viruses, food-related infections and other problems can look similar.

Take frequent small sips of water or an oral rehydration drink, especially if diarrhoea continues. Do not force a large meal. When you feel able, try small portions of plain, nourishing foods such as soup, rice, toast, yoghurt or banana, then add usual foods as tolerated. Rest, wash your hands carefully and avoid preparing food for others while you have ongoing vomiting or diarrhoea. Track whether you are passing urine and whether your energy is returning.

Seek urgent help for confusion, fainting, severe weakness, difficulty breathing, blood in vomit or stool, severe or worsening abdominal pain, or an inability to keep fluids down. Arrange medical advice if urine becomes very dark or infrequent, fever persists, diarrhoea is severe, or appetite does not begin to improve after the infection has settled. Babies, older adults, pregnant people and those with long-term conditions can become dehydrated more quickly.

Ask whether your symptoms fit gastroenteritis, whether you need an examination or testing, and which fluids are suitable if you have diabetes, kidney disease or another condition. Mention recent travel, shared meals, new medicines, fever, pain, vomiting and changes in urine.